Having worked on this bibliography throughout my career, the number of people and institutions that have helped me in one way or another is well beyond my ability to list here. I thanked many in the first two versions published in 1979 and 1989, so here I restrict myself to those who were fundamental to the whole enterprise and to those who have been of particular help since the publication of the first version.

I have worked in many libraries, and the staffs of these libraries have made the research possible and, in many cases, enjoyable. Among the many libraries, the most important ones have been the Alexander Turnbull Library, the American Antiquarian Society, the American Philosophical Society Library, the Athenaeum of Philadelphia, the Bodleian Library and the staff of the Upper Reading Room in particular, the British Library, the Eaton Collection at the University of California-Riverside, the Harry Ransom Center Library, Harvard University’s Houghton and Widener Libraries, the Library of Congress, the London Library, the Merril Collection of Science Fiction, Speculation, and Fantasy, the Mitchell Library in the State Library of New South Wales, the National Libraries of Australia, Canada, New Zealand, and Scotland, the New York Public Library, the Pennsylvania State University Library and Sandy Stelts in particular, the University of Missouri-St. Louis Library and Mary Zettwoch in particular, the U.S. Naval Observatory Library, and the Yale University Beneicke, Divinity School, and Sterling Libraries.

Three book dealers regularly published catalogs that provided clues and necessary information and have often been examples of the highest standards of scholarship, and I owe a lot to Lloyd Currey, George Locke, and Stuart Teitler (now deceased). Given the Publish on Demand phenomenon, many books no longer end up in libraries, and Mark and Cindy Ziesing of Ziesing Books have managed to obtain copies of many books for me.

Two individuals, both now deceased, were constant sources of information. I.F. Clarke’s three editions of his Tale of the Future led me to innumerable utopias, and he and I discussed bibliography over a number of years and beers. Arthur O. Lewis and Merritt Abrash founded the Society for Utopian Studies, which has been one of my intellectual homes, and Art established the utopia collection now named for him at Pennsylvania State University.

A number of individuals have regularly sent me references. Rowan Gibbs has provided me with leads to many New Zealand utopias, particularly in newspapers, and read and corrected both the Australia and New Zealand entries. For some time Deirdre Ní Chuanacháin and I have been exchanging information on Irish utopias. And James Simmons has in a real sense made the bibliography from 2000 on possible by sending me long lists of mostly POD titles that certainly tripled the number of entries from 2000 to the present. Ralph Pordzik’s work on the post colonial utopia led me to many additions, and he has answered quite a few questions over the years. And Gregory Claeys and I have been exchanging references for years.

The many friends and colleagues that I have met through the Society for Utopian Studies and the Utopian Studies Society of Europe have all contributed to my research and the enjoyment of the research in innumerable ways. I wish I could thank them all individually.

Finally, a number of people have made this online version possible. Most important are, at Pennsylvania State University, Sandy Stelts, Curator of Rare Books and Manuscripts in the Eberly Family Special Collections Library, who thought it worth doing, that it could be done, and worked to get the money and support to make it possible, and Mark Mattson, Scholarly Publishing Associate, Publishing and Curation Services, Michele Barbin, Publishing and Curation Services, and Andrew Gearhart, Web Developer, Publishing and Curation Services, who did it. Linda Friend, Head, Scholarly Publishing Services, Publishing and Curation Services actively assisted in helping the project through the system. Early in the project Linda Klimczyk, Assistant Department Head, Department for Information Technologies, of the Pennsylvania State University Library, and Wayne Ellenberger, Programmer Analyst, Department for Information Technologies were involved. Grants were provided by the Krumrine Family Libraries Endowment and Penn State University Libraries Innovation Microgrant Program. And I would like to thank the Department of Political Science at Pennsylvania State University for making my research there possible.